7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.4 High
AI Score
Confidence
High
0.006 Low
EPSS
Percentile
77.9%
The version of python38 installed on the remote host is prior to 3.8.15-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2PYTHON3.8-2023-007 advisory.
A flaw was found in python. In algorithms with quadratic time complexity using non-binary bases, when using int(text), a system could take 50ms to parse an int string with 100,000 digits and 5s for 1,000,000 digits (float, decimal, int.from_bytes(), and int() for binary bases 2, 4, 8, 16, and 32 are not affected). The highest threat from this vulnerability is to system availability. (CVE-2020-10735)
An issue was discovered in compare_digest in Lib/hmac.py in Python through 3.9.1. Constant-time-defeating optimisations were possible in the accumulator variable in hmac.compare_digest. (CVE-2022-48566)
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2 Security Advisory ALASPYTHON3.8-2023-007.
##
include('compat.inc');
if (description)
{
script_id(181954);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/23");
script_cve_id("CVE-2020-10735", "CVE-2022-48566");
script_name(english:"Amazon Linux 2 : python38 (ALASPYTHON3.8-2023-007)");
script_set_attribute(attribute:"synopsis", value:
"The remote Amazon Linux 2 host is missing a security update.");
script_set_attribute(attribute:"description", value:
"The version of python38 installed on the remote host is prior to 3.8.15-1. It is, therefore, affected by multiple
vulnerabilities as referenced in the ALAS2PYTHON3.8-2023-007 advisory.
- A flaw was found in python. In algorithms with quadratic time complexity using non-binary bases, when
using int(text), a system could take 50ms to parse an int string with 100,000 digits and 5s for
1,000,000 digits (float, decimal, int.from_bytes(), and int() for binary bases 2, 4, 8, 16, and 32 are not
affected). The highest threat from this vulnerability is to system availability. (CVE-2020-10735)
- An issue was discovered in compare_digest in Lib/hmac.py in Python through 3.9.1. Constant-time-defeating
optimisations were possible in the accumulator variable in hmac.compare_digest. (CVE-2022-48566)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/AL2/ALASPYTHON3.8-2023-007.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/faqs.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2020-10735.html");
script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2022-48566.html");
script_set_attribute(attribute:"solution", value:
"Run 'yum update python38' to update your system.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:C/I:N/A:N");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-48566");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2022/09/08");
script_set_attribute(attribute:"patch_publication_date", value:"2023/08/21");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/09/27");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python38");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python38-debug");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python38-debuginfo");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python38-devel");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python38-libs");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python38-test");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python38-tkinter");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python38-tools");
script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Amazon Linux Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2023-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/rpm-list");
exit(0);
}
include("rpm.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var alas_release = get_kb_item("Host/AmazonLinux/release");
if (isnull(alas_release) || !strlen(alas_release)) audit(AUDIT_OS_NOT, "Amazon Linux");
var os_ver = pregmatch(pattern: "^AL(A|\d+|-\d+)", string:alas_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "2")
{
if (os_ver == 'A') os_ver = 'AMI';
audit(AUDIT_OS_NOT, "Amazon Linux 2", "Amazon Linux " + os_ver);
}
if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
var pkgs = [
{'reference':'python38-3.8.15-1.amzn2.0.1', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3.8'},
{'reference':'python38-3.8.15-1.amzn2.0.1', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3.8'},
{'reference':'python38-debug-3.8.15-1.amzn2.0.1', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3.8'},
{'reference':'python38-debug-3.8.15-1.amzn2.0.1', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3.8'},
{'reference':'python38-debuginfo-3.8.15-1.amzn2.0.1', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3.8'},
{'reference':'python38-debuginfo-3.8.15-1.amzn2.0.1', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3.8'},
{'reference':'python38-devel-3.8.15-1.amzn2.0.1', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3.8'},
{'reference':'python38-devel-3.8.15-1.amzn2.0.1', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3.8'},
{'reference':'python38-libs-3.8.15-1.amzn2.0.1', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3.8'},
{'reference':'python38-libs-3.8.15-1.amzn2.0.1', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3.8'},
{'reference':'python38-test-3.8.15-1.amzn2.0.1', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3.8'},
{'reference':'python38-test-3.8.15-1.amzn2.0.1', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3.8'},
{'reference':'python38-tkinter-3.8.15-1.amzn2.0.1', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3.8'},
{'reference':'python38-tkinter-3.8.15-1.amzn2.0.1', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3.8'},
{'reference':'python38-tools-3.8.15-1.amzn2.0.1', 'cpu':'aarch64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3.8'},
{'reference':'python38-tools-3.8.15-1.amzn2.0.1', 'cpu':'x86_64', 'release':'AL2', 'rpm_spec_vers_cmp':TRUE, 'exists_check':'python3.8'}
];
var flag = 0;
foreach var package_array ( pkgs ) {
var reference = NULL;
var _release = NULL;
var sp = NULL;
var _cpu = NULL;
var el_string = NULL;
var rpm_spec_vers_cmp = NULL;
var epoch = NULL;
var allowmaj = NULL;
var exists_check = NULL;
if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
if (!empty_or_null(package_array['release'])) _release = package_array['release'];
if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
if (reference && _release && (!exists_check || rpm_exists(release:_release, rpm:exists_check))) {
if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : rpm_report_get()
);
exit(0);
}
else
{
var tested = pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, "python38 / python38-debug / python38-debuginfo / etc");
}
Vendor | Product | Version | CPE |
---|---|---|---|
amazon | linux | python38 | p-cpe:/a:amazon:linux:python38 |
amazon | linux | python38-debug | p-cpe:/a:amazon:linux:python38-debug |
amazon | linux | python38-debuginfo | p-cpe:/a:amazon:linux:python38-debuginfo |
amazon | linux | python38-devel | p-cpe:/a:amazon:linux:python38-devel |
amazon | linux | python38-libs | p-cpe:/a:amazon:linux:python38-libs |
amazon | linux | python38-test | p-cpe:/a:amazon:linux:python38-test |
amazon | linux | python38-tkinter | p-cpe:/a:amazon:linux:python38-tkinter |
amazon | linux | python38-tools | p-cpe:/a:amazon:linux:python38-tools |
amazon | linux | 2 | cpe:/o:amazon:linux:2 |
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.4 High
AI Score
Confidence
High
0.006 Low
EPSS
Percentile
77.9%